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			<h1>Python3 条件控制</h1>
<p>Python 条件语句是通过一条或多条语句的执行结果（True 或者 False）来决定执行的代码块。</p><p>
可以通过下图来简单了解条件语句的执行过程:</p>
<p> <img decoding="async" src="https://www.runoob.com/wp-content/uploads/2013/11/if-condition.jpg"> </p>
<p>代码执行过程：</p>
<p><img decoding="async" width="50%" src="https://static.runoob.com/images/mix/python-if.webp"></p>
<hr>
<h2>if 语句</h2>
<p>Python中if语句的一般形式如下所示：</p>
<div class="example">
<div class="example_code">
<div class="hl-main"><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">condition_1</span><span class="hl-code">:
    </span><span class="hl-identifier">statement_block_1</span><span class="hl-code">
</span><span class="hl-reserved">elif</span><span class="hl-code"> </span><span class="hl-identifier">condition_2</span><span class="hl-code">:
    </span><span class="hl-identifier">statement_block_2</span><span class="hl-code">
</span><span class="hl-reserved">else</span><span class="hl-code">:
    </span><span class="hl-identifier">statement_block_3</span></div>
</div>
</div>
<ul><li>如果 "condition_1" 为 True 将执行 "statement_block_1" 块语句</li><li>如果 "condition_1" 为False，将判断 "condition_2"</li><li>如果"condition_2"
为 True 将执行 "statement_block_2" 块语句</li><li>如果 "condition_2" 为False，将执行"statement_block_3"块语句</li></ul>


<p>
Python 中用 <b>elif</b> 代替了 <b>else if</b>，所以if语句的关键字为：<b>if – elif – else</b>。
</p>
<p>
<strong>注意：</strong></p>
<ul><li>
1、每个条件后面要使用冒号 <span class="marked">:</span>，表示接下来是满足条件后要执行的语句块。</li><li>
2、使用缩进来划分语句块，相同缩进数的语句在一起组成一个语句块。</li><li>
3、在 Python 中没有 <span class="marked">switch...case</span> 语句，但在 Python3.10 版本添加了 <span class="marked">match...case</span>，功能也类似，详见下文。</li></ul>
<p>Gif 演示：</p>
<p><img decoding="async" width="50%" src="//www.runoob.com/wp-content/uploads/2014/05/006faQNTgw1f5wnm0mcxrg30ci07o47l.gif"></p>
<h3>实例</h3>
<p>以下是一个简单的 if 实例：</p>
<div class="example">
<h2 class="example">实例</h2>
<div class="example_code">
<div class="hl-main"><span class="hl-comment">#!/usr/bin/python3</span><span class="hl-code">
 
</span><span class="hl-identifier">var1</span><span class="hl-code"> = </span><span class="hl-number">100</span><span class="hl-code">
</span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">var1</span><span class="hl-code">:
    </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">1 - if 表达式条件为 true</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
    </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-identifier">var1</span><span class="hl-brackets">)</span><span class="hl-code">
 
</span><span class="hl-identifier">var2</span><span class="hl-code"> = </span><span class="hl-number">0</span><span class="hl-code">
</span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">var2</span><span class="hl-code">:
    </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">2 - if 表达式条件为 true</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
    </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-identifier">var2</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">Good bye!</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span></div>
</div>
</div>

<p>执行以上代码，输出结果为：</p>
<pre>
1 - if 表达式条件为 true
100
Good bye!
</pre>
<p>从结果可以看到由于变量 var2 为 0，所以对应的 if 内的语句没有执行。</p>
<p>以下实例演示了狗的年龄计算判断：</p>
<div class="example">
<h2 class="example">实例</h2>
<div class="example_code">
<div class="hl-main"><span class="hl-comment">#!/usr/bin/python3</span><span class="hl-code">
 
</span><span class="hl-identifier">age</span><span class="hl-code"> = </span><span class="hl-builtin">int</span><span class="hl-brackets">(</span><span class="hl-builtin">input</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">请输入你家狗狗的年龄: </span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">age</span><span class="hl-code"> &lt;= </span><span class="hl-number">0</span><span class="hl-code">:
    </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">你是在逗我吧!</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">elif</span><span class="hl-code"> </span><span class="hl-identifier">age</span><span class="hl-code"> == </span><span class="hl-number">1</span><span class="hl-code">:
    </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">相当于 14 岁的人。</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">elif</span><span class="hl-code"> </span><span class="hl-identifier">age</span><span class="hl-code"> == </span><span class="hl-number">2</span><span class="hl-code">:
    </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">相当于 22 岁的人。</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">elif</span><span class="hl-code"> </span><span class="hl-identifier">age</span><span class="hl-code"> &gt; </span><span class="hl-number">2</span><span class="hl-code">:
    </span><span class="hl-identifier">human</span><span class="hl-code"> = </span><span class="hl-number">22</span><span class="hl-code"> + </span><span class="hl-brackets">(</span><span class="hl-identifier">age</span><span class="hl-code"> -</span><span class="hl-number">2</span><span class="hl-brackets">)</span><span class="hl-code">*</span><span class="hl-number">5</span><span class="hl-code">
    </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">对应人类年龄: </span><span class="hl-quotes">&quot;</span><span class="hl-code">, </span><span class="hl-identifier">human</span><span class="hl-brackets">)</span><span class="hl-code">
 
</span><span class="hl-comment">### 退出提示</span><span class="hl-code">
</span><span class="hl-builtin">input</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">点击 enter 键退出</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span></div>
</div>
</div>

<p>将以上脚本保存在dog.py文件中，并执行该脚本：</p>
<pre>
$ python3 dog.py 
请输入你家狗狗的年龄: 1

相当于 14 岁的人。
点击 enter 键退出
</pre>
<p>
以下为if中常用的操作运算符:</p>

<table class="reference">
<tbody><tr>
<th>操作符</th>
<th>描述</th>
</tr>
<tr>
<td><code>&lt;</code></td>
<td>小于</td>
</tr>
<tr>
<td><code>&lt;=</code></td>
<td>小于或等于</td>
</tr>
<tr>
<td><code>&gt;</code></td>
<td>大于</td>
</tr>
<tr>
<td><code>&gt;=</code></td>
<td>大于或等于</td>
</tr>
<tr>
<td><code>==</code></td>
<td>等于，比较两个值是否相等</td>
</tr>
<tr>
<td><code>!=</code></td>
<td>不等于</td>
</tr>
</tbody></table>
<div class="example">
<h2 class="example">实例</h2>
<div class="example_code">
<div class="hl-main"><span class="hl-comment">#!/usr/bin/python3</span><span class="hl-code">
 
</span><span class="hl-comment"># 程序演示了 == 操作符</span><span class="hl-code">
</span><span class="hl-comment"># 使用数字</span><span class="hl-code">
</span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code"> == </span><span class="hl-number">6</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-comment"># 使用变量</span><span class="hl-code">
</span><span class="hl-identifier">x</span><span class="hl-code"> = </span><span class="hl-number">5</span><span class="hl-code">
</span><span class="hl-identifier">y</span><span class="hl-code"> = </span><span class="hl-number">8</span><span class="hl-code">
</span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-identifier">x</span><span class="hl-code"> == </span><span class="hl-identifier">y</span><span class="hl-brackets">)</span></div>
</div>
</div>

<p>
以上实例输出结果：
</p>
<pre>
False
False
</pre>
<p>high_low.py文件演示了数字的比较运算：</p>
<div class="example">
<h2 class="example">实例</h2>
<div class="example_code">
<div class="hl-main"><span class="hl-comment">#!/usr/bin/python3 </span><span class="hl-code">
 
</span><span class="hl-comment"># 该实例演示了数字猜谜游戏</span><span class="hl-code">
</span><span class="hl-identifier">number</span><span class="hl-code"> = </span><span class="hl-number">7</span><span class="hl-code">
</span><span class="hl-identifier">guess</span><span class="hl-code"> = -</span><span class="hl-number">1</span><span class="hl-code">
</span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">数字猜谜游戏!</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">while</span><span class="hl-code"> </span><span class="hl-identifier">guess</span><span class="hl-code"> != </span><span class="hl-identifier">number</span><span class="hl-code">:
    </span><span class="hl-identifier">guess</span><span class="hl-code"> = </span><span class="hl-builtin">int</span><span class="hl-brackets">(</span><span class="hl-builtin">input</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">请输入你猜的数字：</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">
 
    </span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">guess</span><span class="hl-code"> == </span><span class="hl-identifier">number</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">恭喜，你猜对了！</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
    </span><span class="hl-reserved">elif</span><span class="hl-code"> </span><span class="hl-identifier">guess</span><span class="hl-code"> &lt; </span><span class="hl-identifier">number</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">猜的数字小了...</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
    </span><span class="hl-reserved">elif</span><span class="hl-code"> </span><span class="hl-identifier">guess</span><span class="hl-code"> &gt; </span><span class="hl-identifier">number</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">猜的数字大了...</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span></div>
</div>
</div>

<p>
执行以上脚本，实例输出结果如下：
</p>
<pre>
$ python3 high_low.py 
数字猜谜游戏!
请输入你猜的数字：1
猜的数字小了...
请输入你猜的数字：9
猜的数字大了...
请输入你猜的数字：7
恭喜，你猜对了！
</pre>

<hr>
<h2>if 嵌套</h2>
<p>
在嵌套 if 语句中，可以把 if...elif...else 结构放在另外一个 if...elif...else 结构中。
</p>
<pre>
if 表达式1:
    语句
    if 表达式2:
        语句
    elif 表达式3:
        语句
    else:
        语句
elif 表达式4:
    语句
else:
    语句
</pre>
<div class="example">
<h2 class="example">实例</h2>
<div class="example_code">
<div class="hl-main"><span class="hl-comment"># !/usr/bin/python3</span><span class="hl-code">
 
</span><span class="hl-identifier">num</span><span class="hl-code">=</span><span class="hl-builtin">int</span><span class="hl-brackets">(</span><span class="hl-builtin">input</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">输入一个数字：</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">num</span><span class="hl-code">%</span><span class="hl-number">2</span><span class="hl-code">==</span><span class="hl-number">0</span><span class="hl-code">:
    </span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">num</span><span class="hl-code">%</span><span class="hl-number">3</span><span class="hl-code">==</span><span class="hl-number">0</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">你输入的数字可以整除 2 和 3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
    </span><span class="hl-reserved">else</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">你输入的数字可以整除 2，但不能整除 3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
</span><span class="hl-reserved">else</span><span class="hl-code">:
    </span><span class="hl-reserved">if</span><span class="hl-code"> </span><span class="hl-identifier">num</span><span class="hl-code">%</span><span class="hl-number">3</span><span class="hl-code">==</span><span class="hl-number">0</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">你输入的数字可以整除 3，但不能整除 2</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">
    </span><span class="hl-reserved">else</span><span class="hl-code">:
        </span><span class="hl-identifier">print</span><span class="hl-code">  </span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">你输入的数字不能整除 2 和 3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span></div>
</div>
</div>

<p>将以上程序保存到 test_if.py  文件中，执行后输出结果为：</p>
<pre>
$ python3 test.py 
输入一个数字：6
你输入的数字可以整除 2 和 3
</pre>

<hr>
<h2>match...case</h2>
<p>
Python 3.10 增加了<span class="marked"> match...case</span> 的条件判断，不需要再使用一连串的 <span class="marked">if-else</span> 来判断了。
</p>
<p>match 后的对象会依次与 case 后的内容进行匹配，如果匹配成功，则执行匹配到的表达式，否则直接跳过，<span class="marked">_</span> 可以匹配一切。</p>
<p>语法格式如下：</p>
<pre>match subject:
    case &lt;pattern_1&gt;:
        &lt;action_1&gt;
    case &lt;pattern_2&gt;:
        &lt;action_2&gt;
    case &lt;pattern_3&gt;:
        &lt;action_3&gt;
    case _:
        &lt;action_wildcard&gt;</pre><p>
<span class="marked">case _:</span> 类似于 C 和 Java 中的 <span class="marked">default:</span>，当其他 case 都无法匹配时，匹配这条，保证永远会匹配成功。</p>


<div class="example"><h2 class="example">实例</h2> <div class="example_code">
<br />
<span style="color: Green;font-weight:bold;">def</span> http_error<span style="color: Olive;">&#40;</span>status<span style="color: Olive;">&#41;</span>:<br />
&nbsp; &nbsp; match status:<br />
&nbsp; &nbsp; &nbsp; &nbsp; case <span style="color: Maroon;">400</span>:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: Green;font-weight:bold;">return</span> <span style="color: #a11;">&quot;Bad request&quot;</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; case <span style="color: Maroon;">404</span>:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: Green;font-weight:bold;">return</span> <span style="color: #a11;">&quot;Not found&quot;</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; case <span style="color: Maroon;">418</span>:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: Green;font-weight:bold;">return</span> <span style="color: #a11;">&quot;I'm a teapot&quot;</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; case _:<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="color: Green;font-weight:bold;">return</span> <span style="color: #a11;">&quot;Something's wrong with the internet&quot;</span><br />
<br />
mystatus<span style="color: Gray;">=</span><span style="color: Maroon;">400</span><br />
<span style="color: Green;font-weight:bold;">print</span><span style="color: Olive;">&#40;</span>http_error<span style="color: Olive;">&#40;</span><span style="color: Maroon;">400</span><span style="color: Olive;">&#41;</span><span style="color: Olive;">&#41;</span><br />
</div></div>
<p>以上是一个输出 HTTP 状态码的实例，输出结果为：</p>
<pre>Bad request</pre><p>
一个 case 也可以设置多个匹配条件，条件使用 <span class="marked">｜</span> 隔开，例如：</p>
<pre>...
    case 401|403|404:
        return "Not allowed"</pre>

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<div id="postcomments"  style="display:none;" >
	<ol class="commentlist">
		<li class="comment even thread-even depth-1" id="comment-10556"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;小奈</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;734***009@qq.com</p></div><div id="runoobvote-id-10556" data-commid = "10556" class="upvotejs"><a class="upvote"></a> <span class="count">71</span></div></div><div class="comt-main" id="div-comment-10556"><p>以下实例 x 为 0-99 取一个数，y 为 0-199 取一个数,如果 x>y 则输出 x，如果 x 等于 y 则输出 x+y，否则输出y。</p>
<pre>
#!/usr/bin/python3
import random

x = random.choice(range(100))
y = random.choice(range(200))
if x &gt; y:
    print('x:',x)
elif x == y:
    print('x+y:', x + y)
else:
    print('y:',y)
</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">小奈</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;小奈</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;734***009@qq.com</p></div></span>6年前 (2017-03-30)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-12954"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;kein</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;201***63.com</p></div><div id="runoobvote-id-12954" data-commid = "12954" class="upvotejs"><a class="upvote"></a> <span class="count">80</span></div></div><div class="comt-main" id="div-comment-12954"><pre>
#!/usr/bin/python3

"""对上面例子的一个扩展"""

print("=======欢迎进入狗狗年龄对比系统========")
while True:
    try:
        age = int(input("请输入您家狗的年龄:"))
        print(" ")
        age = float(age)
        if age &lt; 0:
            print("您在逗我？")
        elif age == 1:
            print("相当于人类14岁")
            break
        elif age == 2:
            print("相当于人类22岁")
            break
        else:
            human = 22 + (age - 2)*5
            print("相当于人类：",human)
            break
    except ValueError:
        print("输入不合法，请输入有效年龄")
###退出提示
input("点击 enter 键退出")
</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">kein</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;kein</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;201***63.com</p></div></span>6年前 (2017-06-14)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-16045"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;阿科</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;121***125@qq.com</p></div><div id="runoobvote-id-16045" data-commid = "16045" class="upvotejs"><a class="upvote"></a> <span class="count">44</span></div></div><div class="comt-main" id="div-comment-16045"><p>数字猜谜游戏优化</p>

<pre>print('二、数字猜谜游戏')
print('数字猜谜游戏！')

a = 1
i = 0
while a != 20:
   a = int (input ('请输入你猜的数字：'))
   i += 1    
   if a == 20:
      if i&lt;3:
         print('真厉害，这么快就猜对了！')
      else :
         print('总算猜对了，恭喜恭喜！')
   elif a &lt; 20:
      print('你猜的数字小了，不要灰心，继续努力！')
   else :
      print('你猜的数字大了，不要灰心，继续加油！')</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">阿科</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;阿科</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;121***125@qq.com</p></div></span>6年前 (2017-08-09)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-26355"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;小叶</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;shi***0415@163.com</p></div><div id="runoobvote-id-26355" data-commid = "26355" class="upvotejs"><a class="upvote"></a> <span class="count">35</span></div></div><div class="comt-main" id="div-comment-26355"><pre>#!/usr/bin/python3

# 继续扩展，加入用户提示判断是否退出还是继续

print("=======欢迎进入狗狗年龄对比系统========")
control = "N"
while control=="N":
    try:
        age = int(input("请输入您家狗的年龄:"))
        #print(" ")
        age = float(age)
        if age &lt; 0:
            print("您在逗我？")
        elif age == 1:
            print("相当于人类14岁")
            #break
        elif age == 2:
            print("相当于人类22岁")
            #break
        else:
            human = 22 + (age - 2)*5
            print("相当于人类：",human)
            #break
    except ValueError:
        print("输入不合法，请输入有效年龄")
    print("")
    control = input("退出(Y/N)？")
    print("")
###退出提示
input("点击 enter 键退出")</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">小叶</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;小叶</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;shi***0415@163.com</p></div></span>5年前 (2018-04-16)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-26555"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;米老鼠</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;468***534@qq.com</p></div><div id="runoobvote-id-26555" data-commid = "26555" class="upvotejs"><a class="upvote"></a> <span class="count">44</span></div></div><div class="comt-main" id="div-comment-26555"><p>条件为假：<span class="marked">0</span>, <span class="marked">false</span>, <span class="marked">''</span>, <span class="marked">None</span>, 例子如下：</p>

<pre>&gt;&gt;&gt; a=0
&gt;&gt;&gt; if a:
...     print(11)
... else:
...     print(22)
...
22

&gt;&gt;&gt; a=None
&gt;&gt;&gt; if a:
...     print(11)
... else:
...     print(22)
...
22
&gt;&gt;&gt;</pre>

<p>条件为真：<strong>不为 0</strong>, <span class="marked">True</span>, <span class="marked">'None'</span>, <strong>字符串不为空串</strong></p>

<pre>&gt;&gt;&gt; a=2
&gt;&gt;&gt; if a:
...     print(11)
... else:
...     print(22)
...
11
&gt;&gt;&gt; a="None"
&gt;&gt;&gt; if a:
...     print(11)
... else:
...     print(22)
...
11
&gt;&gt;&gt; a='bbbb'
&gt;&gt;&gt; if a:
...     print(11)
... else:
...     print(22)
...
11
&gt;&gt;&gt;</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">米老鼠</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;米老鼠</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;468***534@qq.com</p></div></span>5年前 (2018-04-22)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-28612"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;JIECAO</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;shi***lingmail@vip.qq.com</p></div><div id="runoobvote-id-28612" data-commid = "28612" class="upvotejs"><a class="upvote"></a> <span class="count">37</span></div></div><div class="comt-main" id="div-comment-28612"><p data-title="Python BMI 计算">使用判断语句来实现  BMI 的计算。</p>
<p>BMI 指数（即身体质量指数，简称体质指数又称体重，英文为 Body Mass Index，简称BMI），是用体重公斤数除以身高米数平方得出的数字</p>
<pre>#!/usr/bin/env python3

print('----欢迎使用BMI计算程序----')
name=input('请键入您的姓名:')
height=eval(input('请键入您的身高(m):'))
weight=eval(input('请键入您的体重(kg):'))
gender=input('请键入你的性别(F/M)')
BMI=float(float(weight)/(float(height)**2))
#公式
if BMI&lt;=18.4:
    print('姓名:',name,'身体状态:偏瘦')
elif BMI&lt;=23.9:
    print('姓名:',name,'身体状态:正常')
elif BMI&lt;=27.9:
    print('姓名:',name,'身体状态:超重')
elif BMI&gt;=28:
    print('姓名:',name,'身体状态:肥胖')
import time;
#time模块
nowtime=(time.asctime(time.localtime(time.time())))
if gender=='F':
    print('感谢',name,'女士在',nowtime,'使用本程序,祝您身体健康!')
if gender=='M':
    print('感谢',name,'先生在',nowtime,'使用本程序,祝您身体健康!')</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="../note/28612">JIECAO</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;JIECAO</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;shi***lingmail@vip.qq.com</p></div></span>5年前 (2018-06-21)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-28793"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;babeimi</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;xia***i3941@hotmail.com</p><p><i class="fa fa-external-link" aria-hidden="true"></i> <a rel="nofollow" target="_blank" href="https://www.jianshu.com/p/55a4ed7d5787">&nbsp;&nbsp;参考地址</a></p></div><div id="runoobvote-id-28793" data-commid = "28793" class="upvotejs"><a class="upvote"></a> <span class="count">84</span></div></div><div class="comt-main" id="div-comment-28793"><p data-title="Python true(真) 和 false(假)判断" data-commid="26555">下表列出了不同数值类型的 true 和 false 情况：</p>
<table class="reference">
<thead>
<tr>
<th style="text-align:center">类型</th>
<th style="text-align:center">False</th>
<th style="text-align:center">True</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:center">布尔</td>
<td style="text-align:center">False(与0等价)</td>
<td style="text-align:center">True(与1等价)</td>
</tr>
<tr>
<td style="text-align:center">数值</td>
<td style="text-align:center">0, &nbsp;&nbsp;0.0</td>
<td style="text-align:center">非零的数值</td>
</tr>
<tr>
<td style="text-align:center">字符串</td>
<td style="text-align:center">'',&nbsp;&nbsp;""(空字符串)</td>
<td style="text-align:center">非空字符串</td>
</tr>
<tr>
<td style="text-align:center">容器</td>
<td style="text-align:center">[],&nbsp;&nbsp;(),&nbsp;&nbsp;{},&nbsp;&nbsp;set()</td>
<td style="text-align:center">至少有一个元素的容器对象</td>
</tr>
<tr>
<td style="text-align:center">None</td>
<td style="text-align:center">None</td>
<td style="text-align:center">非None对象</td>
</tr>
</tbody>
</table><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="../note/28793">babeimi</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;babeimi</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;xia***i3941@hotmail.com</p><p><i class="fa fa-external-link" aria-hidden="true"></i> <a rel="nofollow" target="_blank" href="https://www.jianshu.com/p/55a4ed7d5787">&nbsp;&nbsp;参考地址</a></p></div></span>5年前 (2018-06-27)</div></div></li><!-- #comment-## -->
<li class="comment byuser comment-author-tianqixin bypostauthor odd alt thread-odd thread-alt depth-1" id="comment-29486"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;Yuanlgone</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;183***68730@163.com</p></div><div id="runoobvote-id-29486" data-commid = "29486" class="upvotejs"><a class="upvote"></a> <span class="count">38</span></div></div><div class="comt-main" id="div-comment-29486"><p><strong>if 的两种格式:</strong></p>

<p>可以括号限定代码域，加强代码可读性。</p>

<pre>name ="pag"

if name == "pag":
  print(name=="pag")   # True

if (name == "pag"):{
  print(name == "pag") # True
}</pre>



<blockquote><p>来着 <span class="marked"><a href="mailto:178592922@qq.com" target="_blank" rel="noopener noreferrer nofollow ugc">As000000</a></span> 的解读:</p>
<p>if 可以括号限定代码域，加强代码可读性。</p>

<p>这种说法是不正确的，python 代码块只有缩进。</p>

<p>不妨把花括号里面多加一行，就发现会报错：</p>

<pre>if (name == "pag"):{
  print(name == "pag")
  print("line 2 of if condition")
}</pre>
<p>报错信息：</p>
<pre>
  File "test.py", line 4
    print("line 2 of if condition")
        ^
SyntaxError: invalid syntax</pre>
<p>而 if 后花括号一条 print 语句之所以没报错，是因为花括号括起来的是一个集合，相当于条件为 True 的时候定义一个集合，我们不妨以相似的方式定义两个集合 aa，bb。</p>

<pre>name = "pag"
aa={print(name == "pag")}
bb={print(name == "pag"),"BBBB"}
print(aa)
print(bb)</pre>
<p>输出结果如下：</p>

<pre>True
True
{None}
{'BBBB', None}</pre></blockquote>



<div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">Yuanlgone</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;Yuanlgone</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;183***68730@163.com</p></div></span>5年前 (2018-07-12)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-35433"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;存在时间</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;tsj***o@qq.com</p></div><div id="runoobvote-id-35433" data-commid = "35433" class="upvotejs"><a class="upvote"></a> <span class="count">20</span></div></div><div class="comt-main" id="div-comment-35433"><p>取随机数扩展。取随机数直到两数相等，显示取数次数。</p>

<pre>import random
x = random.choice(range(100))
y = random.choice(range(100))
b,c = x,y
a = 1
print(x,y)
while x != y:
 if x &gt; y:
    print('x:',x)
 elif x == y:
    print('x+y:', x + y,'totall cal ',a,'times')
 else:
    print('y:',y)
 x = random.choice(range(100))
 y = random.choice(range(100))
 a = a+1
print('initialized data:',b,c,'x+y:', x + y,'total cal ',a,'times')</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">存在时间</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;存在时间</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;tsj***o@qq.com</p></div></span>5年前 (2018-09-27)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-35469"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;川河岳</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;cit***ai@qq.com</p></div><div id="runoobvote-id-35469" data-commid = "35469" class="upvotejs"><a class="upvote"></a> <span class="count">101</span></div></div><div class="comt-main" id="div-comment-35469"><p><span class="marked"><a href="#div-comment-35433" rel="nofollow">存在时间</a></span>  楼上的太复杂了，而且 elif 还不会执行到，优化如下：</p>

<pre>import random
a = 0
while True:    
    x = random.choice(range(100))
    y = random.choice(range(100))
    a = a+1    
    if x &gt; y:        
        print(x,'&gt;',y)
    elif x &lt; y:        
        print(x,'&lt;',y)
    else:        
        print('x=y=', x, 'total cal ', a, 'times')
        break</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">川河岳</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;川河岳</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;cit***ai@qq.com</p></div></span>5年前 (2018-09-28)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-39701"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;葫芦又</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;111***0177@qq.com</p></div><div id="runoobvote-id-39701" data-commid = "39701" class="upvotejs"><a class="upvote"></a> <span class="count">45</span></div></div><div class="comt-main" id="div-comment-39701"><p>如果 if 语句中的条件过长，可以用接续符 <span class="marked">\</span> 来换行。</p>
<p>例如：</p>

<pre>if 2&gt;1 and 3&gt;2 and 4&gt;3 and \
    5&gt;4 and 6&gt;5 and 7&gt;6 and \
    8&gt;7:
    print("OK")</pre>
<p><strong>注意</strong>: <span class="marked">\</span> 后的一行要缩进没有要求，可无序缩进，但我们保持代码的可读性一般设置同样的缩进格式。</p><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">葫芦又</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;葫芦又</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;111***0177@qq.com</p></div></span>4年前 (2019-02-12)</div></div></li><!-- #comment-## -->
<li class="comment odd alt thread-odd thread-alt depth-1" id="comment-48150"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;秋 | 先生</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;mas***lipeng@163.com</p></div><div id="runoobvote-id-48150" data-commid = "48150" class="upvotejs"><a class="upvote"></a> <span class="count">34</span></div></div><div class="comt-main" id="div-comment-48150"><p>实例:</p>
<pre># 查询 n 到 m 间的所有素数
def find_prime_number(n, m):
    if isinstance(n, int) and isinstance(m, int):
        if m &lt;= 1:
            return "error range"
        if 1 &gt;= n &gt; m:
            return "error start"
        numbers = list()
        num = n
        while num &lt;= m:
            i = 2
            while i &lt; num:
                if (num % i == 0) and (num != i):
                    break
                else:
                    i += 1
            if num == i:
                numbers.append(num)
            num += 1
        return numbers
    else:
        return "error input"
print(find_prime_number(1, 100))</pre><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">秋 | 先生</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;秋 | 先生</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;mas***lipeng@163.com</p></div></span>4年前 (2019-11-05)</div></div></li><!-- #comment-## -->
<li class="comment even thread-even depth-1" id="comment-51167"><span class="comt-f">#0</span><div class="comt-avatar wrapper"><i style="font-size:36px;" class="fa fa-user-circle" aria-hidden="true"></i><div class="tooltip"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;My_Skity</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;719***459@qq.com</p></div><div id="runoobvote-id-51167" data-commid = "51167" class="upvotejs"><a class="upvote"></a> <span class="count">21</span></div></div><div class="comt-main" id="div-comment-51167"><p>在 <strong>if...elif...else</strong> 的多个语句块中只会执行一个语句块，例如：</p>

<pre>age = int(input("请输入你家狗狗的年龄: "))
print("")
if age &lt;= 0:
    print("你是在逗我吧!")
elif 1 &lt;= age &lt;=2:      #与下一个elif条件重复，只执行符合条件的第一个语句块
    print("相当于 14 岁的人。")
elif age == 2:
    print("相当于 22 岁的人。")
elif age &gt; 2:
    human = 22 + (age - 2) * 5    print("对应人类年龄: ", human)</pre>
<p>因此，在写 elif 条件时一定要做到互不重复。</p><div class="comt-meta wrapper"><span class="comt-author"><a target="_blank" href="javascript:;">My_Skity</a><div class="tooltip tooltip1"><p><i class="fa fa-user" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;My_Skity</p><p><i class="fa fa-envelope" aria-hidden="true"></i>&nbsp;&nbsp;719***459@qq.com</p></div></span>3年前 (2020-03-03)</div></div></li><!-- #comment-## -->
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							<li class="form-inline"><label class="hide" for="url">引用地址</label><input class="ipt" type="text" name="url" id="url" value="" tabindex="4" placeholder="引用地址"><span class="text-muted">引用地址</span></li>
						</ul>
					</div>
				
			
		</div>

	</form>
	</div>
<script type="text/javascript">
$(function() {
	//初始化编辑器
	
	var editor = new Simditor({
	  textarea: $('#mded'),
	  placeholder: '写笔记...',
	  upload:false,
	 // upload: {url:'/api/comment_upload_file.php',params: null,fileKey: 'upload_file',connectionCount: 1,leaveConfirm: '文件正在上传，您确定离开?'},
	  defaultImage: 'https://www.runoob.com/images/logo.png',
	  codeLanguages: '',
	  autosave: 'editor-content',
	  toolbar: [  'bold','code','ul','ol','image' ]
	});
	editor.on('selectionchanged', function() {
		$(".code-popover").hide();
	});

	// 提交数据
	$("#share_code").click(function() {
		$(".comment-signarea").hide();
		$("#commentform").show();
		
	});
	$("#user_add_note").click(function() {
		$(".comment-signarea").hide();
		$("#commentform").show();
		$('html, body').animate({
       	    scrollTop: $("#respond").offset().top
    	}, 200);
	});

	// 提交笔记
	var commentform=$('#commentform');
	commentform.prepend('<div id="comment-status" style="display:none;" ></div>');
	var statusdiv=$('#comment-status');
	
	commentform.submit(function(e){
		e.preventDefault();
		var noteContent = editor.getValue();
		// console.log(noteContent);
		noteContent = noteContent.replace(/<pre><code>/g,"<pre>");
		noteContent = noteContent.replace(/<\/code><\/pre>/g,"</pre>");
		
		// 系列化表单数据
		var comment_parent = 0;
		var is_user_logged_in = $("#is_user_logged_in").val();
		var comment_post_ID =  7299;
		var _wp_unfiltered_html_comment = $("#_wp_unfiltered_html_comment").val();
		var comment = noteContent;
		var author = $("#author").val();
		var url = $("#url").val();
		var email = $("#email").val();
		if(isBlank(author) && is_user_logged_in==0) {
			statusdiv.html('<p  class="ajax-error">请输入昵称！</p>').show();
		} else if(isBlank(email)  && is_user_logged_in==0) {
			statusdiv.html('<p  class="ajax-error">请输入邮箱！</p>').show();
		} else {
			// var formdata=commentform.serialize() + "&comment=" + noteContent ;
			// 添加状态信息
			statusdiv.html('<p>Processing...</p>').show();
			// 获取表单提交地址
			var formurl=commentform.attr('action');
			
			// 异步提交
			$.ajax({
					type: 'post',
					url: formurl,
					dataType:'json',
					data: {"comment_parent":comment_parent,"comment_post_ID":comment_post_ID, "_wp_unfiltered_html_comment":_wp_unfiltered_html_comment,"comment":comment,"url":url, "email":email,"author":author},
					error: function(XMLHttpRequest, textStatus, errorThrown){
					statusdiv.html('<p class="ajax-error" >数据不完整或表单提交太快了！</p>').show();
				},
				success: function(data, textStatus){
					if(data.errorno=="0") {
						$("#submit").prop('disabled', true);
						statusdiv.html('<p class="ajax-success" >笔记已提交审核，感谢分享笔记！</p>').show();
						alert('笔记已提交审核，感谢分享笔记！');
					}else{
						statusdiv.html('<p class="ajax-error" >'+data.msg+'</p>').show();
					}
					commentform.find('textarea[name=comment]').val('');
				}
			});
			setTimeout(function(){
		        $("#submit").prop('disabled', false);
		    }, 10*1000);
		}
		return false;

	});
	$(".comt-author").click(function() {
		href = $(this).children("a").attr("href");
		if(href.indexOf("/note/")!=-1) {
			var win = window.open(href, '_blank');
  			win.focus();
		}
	});
	$(".comt-meta span").hover(function(){
		$(this).children(".tooltip").css({ "opacity": 1, "pointer-events": "auto"});
	},function(){
		$(this).children(".tooltip").removeAttr("style");
	});
	/*
	$(".wrapper i").hover(function(){
		$(this).siblings(".tooltip").css({ "opacity": 1, "pointer-events": "auto"});
	},function(){
		$(this).siblings(".tooltip").css({ "opacity": 0, "pointer-events": "auto"});
	});
	*/
	//Upvote.create('runoobvote-id', {callback: vote_callback});
	var ajaxurl = 'https://www.runoob.com/wp-admin/admin-ajax.php';
	var callback = function(data) {
		//console.log($('#runoobvote-id').upvote('upvoted'));
		//console.log($('#runoobvote-id').upvote('downvoted'));
		//console.log(data);
		_vote_action = data.action;
		id_arr = data.id.split('-');
		um_id= id_arr[2];
		//console.log(um_id);
		
		var re = /^[1-9]+/;
		if (re.test(um_id)) { 
			var ajax_data = {
				_vote_action: _vote_action,
				action: "pinglun_zan",
				um_id: um_id,
				um_action: "ding"
			};
			//console.log(ajax_data);
			$.post(ajaxurl,ajax_data,function(status){
				//if(status.vote_num>999) {
				//	_voteHtml = '<span style="display: block; text-align: center;font-size: 20px; color: #6a737c; margin: 8px 0;">'+kFormatter(status.vote_num) +'</span>';
				//	$("#runoobvote-id-" + um_id + " .count").hide().after(_voteHtml);
				//}
				
			});
		}
	};
	if($('#comments').length && $('.upvotejs').length){
		$('.upvotejs').upvote({id: 7299, callback: callback});
	
		$.post(ajaxurl,{"action":"pinglun_zan","postid":7299},function(data){  
			$(data).each(function(key,value) {
				$("#runoobvote-id-" + value.commid + " .upvote").addClass(value.upvotejs_class);
				$("#runoobvote-id-" + value.commid + " .downvote").addClass(value.downvote_class);
				$("#runoobvote-id-" + value.commid + " .count").text(value.upvote_count);
			})
		},'json');
		
	}
	
	
});
function isBlank(str) {
    return (!str || /^\s*$/.test(str));
}
function kFormatter(num) {
	// return num;
    return Math.abs(num) > 999 ? Math.sign(num)*((Math.abs(num)/1000).toFixed(1)) + 'k' : Math.sign(num)*Math.abs(num)
}

</script>

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